Cortizo COR Vision Sliding Doors | Ultra-Slim Aluminium

The COR Vision sliding door from Cortizo is a super slender aluminium system offering outstanding versatility and creating a high-end sliding door solution for any property. The glass is structurally bonded to the sash, allowing for minimal sightlines. The frames can also be embedded into the surrounding walls, maximising the amount of glass on display. This is our personal favourite with the fastest lead times, best value, and the thinnest sightlines in the UK, just 20mm!

U-value of 1.3 W/m²K
20mm interlock profile
30mm maximum glazing thickness
Double glazing options available
Up to 6 sashes and 3 rails
Polyamide strip length from 16 to 24mm
Maximum sash width of 2500mm and height of 3000mm
Maximum sash weight of 320kg

Aluminium sliding doors opening to a scenic outdoor view with a pool and patio area.

Technical Specifications
Colours & Finishes

Technical Specifications

Maximum glazing thickness
55 mm
Opening possibilities
Sliding of 2, 3, 4 & 6 sashes
Possibility of 1 rail (1 sash + 1 fixed light)
& 3 rails
Sections
Frame 160.6 mm - 3 rails 251 mm
Sash 70 mm
Profile thickness
Door 2.0 mm
Polyamide strip length
Frame 35 mm / Sash 24 mm
Maximum dimensions/sash
Width (L) = 3,300 mm
Height (H) = 3,300 mm
Maximum weight/sash
400 kg

Please consult regarding maximum weight and dimensions for other opening types

Finishes
Possibility of dual colour systems
Colour powder coating (RAL, mottled and rough)
Wood effect powder coating
Anti-bacterial powder coating
Anodised

Glass Options

All our Cortizo sliding doors are available with a choice of high-performance glazing to suit your project requirements:

Double-glazed sealed units — standard specification for thermal efficiency
Triple-glazed units — enhanced thermal and acoustic performance
Acoustic laminated glass — for noise reduction in urban and roadside locations
Solar control glass — reduces heat gain and glare while maintaining natural light

We specify the optimal glass configuration for each project based on thermal performance, acoustic requirements and Building Regulations compliance.

Aluminium sliding door frame with glass panels for modern home design.

Colours & Finishes

Our Cortizo sliding doors are available in three premium finish categories — anodised, matt RAL and textured RAL — with dual-colour options allowing a different finish inside and outside. Woodgrain foil finishes are also available for a natural timber-effect appearance.

Popular RAL Colours

RAL 7016 Anthracite Grey
RAL 9005 Jet Black
RAL 7021 Black Grey
RAL 9010 Pure White
RAL 9001 Cream White
RAL 7012 Basalt Grey
RAL 7022 Umbra Grey
RAL 6009 Fir Green
RAL 8014 Sepia Brown

Any standard RAL colour is available to order. Slimline sliding doors are often specified with a matt or textured finish in darker tones to maximise the contrast between frame and glass.

FAQs About Cortizo COR Vision Sliding Door at Direct Trade Windows

What makes COR Vision Sliding Doors different from other sliding systems

They feature minimal visible frames (just 20mm interlock), giving a sleek, modern look while delivering exceptional performance in thermal insulation, acoustic comfort, and smooth operation.

Can COR Vision Sliding Doors be made to custom sizes?

Yes – they are fully customisable in size, configuration, and finish, making them ideal for bespoke architectural projects.

Do they offer good thermal efficiency?

Yes – with advanced thermal break technology and double or triple glazing options, they achieve excellent insulation values to improve comfort and energy efficiency.

Are there multiple opening configurations available?

Absolutely – COR Vision can be designed as two-, three-, or four-panel systems, with fixed and sliding combinations to suit your space.

Can they be flush-fitted for a seamless floor level?

Yes – they can be installed with a flush threshold, creating a smooth, step-free transition between inside and outside.

What glazing options are available?

They support large-format double or triple glazing for maximum clarity, safety, and performance.

Are COR Vision Sliding Doors secure?

Yes – they come with multi-point locking systems and high-strength aluminium frames for outstanding security.

Can they be motorised?

Yes – COR Vision can be fitted with an automated opening system for effortless operation.

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Cortizo COR Vision Sliding Door